So you're not up to eithe "The Doctor's Wife" or "Journey to the Center Of the Tardis yet" or even "The Name Of The Doctor"?
I saw those recently but I don't know what you're refering to.
We know from those episodes that the interior of the Tardis can control time / have areas of where time is sped up, slowed down, or even have different realities "bleed" together inside the Tardis. We also now know that the Tardis experiences all of time at once: what has happened, what is happening, what has yet to happen.
For example: The ~30 (past and future) console rooms (and probably the other "deleted" rooms) are still there in the archives / as echoes time shifted. So it's possible that some of the interior is experiencing/stored in different realities or points in time.